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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Iron ores—Determination of total iron and other multi-element content—Wavelength dispersive X-ray fluorescence spectrometry (cobalt internal standard method)
Standard published on 6.8.2023
Selected format:Iron ores—Determination of chlorine content—X-ray fluorescence spectrometric method
Standard published on 29.6.2024
Selected format:Iron ores—Determination of thorium content—Arsenazo spectrophotometric method
Standard published on 28.5.2024
Selected format:Iron ores—Determination of silicon content—The silicomolybdic blue spectrophotometric method reduced by ammonium ferrous sulfate
Standard published on 13.10.2016
Selected format:Iron ores—Determination of gold, silver, platinum, palladium contents—Inductively coupled plasma mass spectrometry method
Standard published on 25.4.2025
Selected format:Vaseline for capacitor
Standard published on 5.10.2025
Selected format:Paints and varnishes—Determination of film hardness by pencil test
Standard published on 30.12.2022
Selected format:Chemical reagent—Cupric oxide powder
Standard published on 29.9.2024
Selected format:Paints and varnishes - Bend test (cylindrical mandrel)
Standard published on 11.9.2007
Selected format:Plastics(polyester resins) and paints and varnishes(binders) - Determination of partial acid value and total acid value
Standard published on 4.6.2008
Selected format:Latest update: 2026-08-21 (Number of items: 2 298 377)
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